/Engine/Source/Editor/GraphEditor/Public/SGraphPanel.h
Get a graph node widget from the specified GUID, if it applies to any nodes in this graph
[TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [SGraphNode](API\Editor\GraphEditor\SGraphNode) > GetNodeWidgetFromGuid ( [FGuid](API\Runtime\Core\Misc\FGuid) Guid ) const